diff --git a/.github/workflows/ci-validation.yml b/.github/workflows/ci-validation.yml
index 39c435e4..b88a04f0 100644
--- a/.github/workflows/ci-validation.yml
+++ b/.github/workflows/ci-validation.yml
@@ -20,7 +20,7 @@ jobs:
     timeout-minutes: 10
     steps:
       - uses: actions/checkout@v7
-      - uses: taiki-e/install-action@v2.87.1
+      - uses: taiki-e/install-action@v2.87.21
         with:
           tool: shellcheck@0.11.0
       - name: Install actionlint from its official release
diff --git a/.github/workflows/dependency-policy.yml b/.github/workflows/dependency-policy.yml
index 73f3a368..5aaf2643 100644
--- a/.github/workflows/dependency-policy.yml
+++ b/.github/workflows/dependency-policy.yml
@@ -18,7 +18,7 @@ jobs:
     timeout-minutes: 15
     steps:
       - uses: actions/checkout@v7
-      - uses: taiki-e/install-action@v2.87.1
+      - uses: taiki-e/install-action@v2.87.21
         with:
           tool: cargo-deny@0.19.8
       - run: cargo deny --locked check
diff --git a/.github/workflows/rust-ci.yml b/.github/workflows/rust-ci.yml
index 8418d0be..8043a8d3 100644
--- a/.github/workflows/rust-ci.yml
+++ b/.github/workflows/rust-ci.yml
@@ -97,7 +97,7 @@ jobs:
           rustup target add x86_64-pc-windows-msvc
 
       - name: Install cargo-xwin
-        uses: taiki-e/install-action@v2.87.1
+        uses: taiki-e/install-action@v2.87.21
         with:
           tool: cargo-xwin@${{ env.CARGO_XWIN_VERSION }}
 
@@ -162,7 +162,7 @@ jobs:
       - uses: actions/checkout@v7
 
       - name: Install cargo-deny
-        uses: taiki-e/install-action@v2.87.1
+        uses: taiki-e/install-action@v2.87.21
         with:
           tool: cargo-deny@0.19.8
 
@@ -218,7 +218,7 @@ jobs:
       - name: Install cargo-xwin
         # Pin a known-good release so a surprise upstream behaviour
         # change can't silently re-break the cross build.
-        uses: taiki-e/install-action@v2.87.1
+        uses: taiki-e/install-action@v2.87.21
         with:
           tool: cargo-xwin@${{ env.CARGO_XWIN_VERSION }}